what age do they know how to get into the chicken house at night?

I am new to chickens. My little ones, around the 10 week mark, were let out into their run yesterday. I had left them in the house only for a few days. They had no idea how to go into the house in hte night time. I had to put them back in myself when it was dark! Poor little things! What age do they usually start doing in themselves?

IME, if you put them in a few nights, they will figure it out & go on their own. What I do is lure them into the run with scratch & close the run & they go into their house on their own. Then, after a couple of nights, they figure out to go to the run & their coop on their own.

You need to keep them INSIDE the coop for like a week...
Then they understand that the new coop is "home"...and will usually go into by themselves.
You will probably have to round them up and put them in the coop at night for a few nights also when you let them out of the coop....

Yeah, if the coop is dark they might not go in. That's why a little before it starts getting even a little dark, I go ahead & lure them in the run with a little scratch...only enough to last them for about 5-10 min or so. Then, they go into their coop & get situated where they want to roost & by the time they get settled it's dark.

i was told to keep them in their house for a week but decided to let them into the run as well as it is hot here at the moment and they looked a little restricted. Should I put them back in the house only? And not in the run even though they have had the run for two days now? Will they still learn that the house is where to go even though I had them out? I will attach a pic of their home in the next entry because I have not loaded it yet!.